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Message: <blockquote data-quote="HawaiianHaole" data-source="post: 393825" data-attributes="member: 552120"><p>I used to have 4ga power wire running from under the hood through the firewall.  I had it running through the plastic "sleeve"   through which other wires come into the passenger compartment.  When I switched over to 0/1 this weekend, it opened the hole a bit more.  There is more engine noise in the car now, especially when I get on the gas.  Is there something I can use to tighten the air gaps around the 0/1 wire and clean up that opening in the firewall, all while reducing the noise creeping in through it?</p></blockquote><p></p>

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